code: def test_index_values(using_copy_on_write):
      idx = Index([1, 2, 3])
      result = idx.values
      if using_copy_on_write:
          assert result.flags.writeable is False
      else:
          assert result.flags.writeable is True
  
file_path: pandas/pandas/tests/copy_view/index/test_index.py
imports: import numpy
  import pytest
  from pandas import DataFrame, Index, Series
  import pandas._testing
  from pandas.tests.copy_view.util import get_array
label_desc: Use image node_id 13 for calling a global function with example usage: test_index_values(using_copy_on_write) without return types